Shut up! Setter's dug around issue (10)
I believe the answer is:
imprisoned
'shut up' is the definition.
(shut away in prison)
'setter's dug around issue' is the wordplay.
'setter's' becomes 'im' (referring to the person who set the crossword).
'dug' becomes 'pried' (dig can mean to investigate or pry).
'around' indicates putting letters inside.
'issue' becomes 'son' (issue can mean someone's offspring).
'pried' going around 'son' is 'prisoned'.
'im'+'prisoned'='IMPRISONED'
(Other definitions for imprisoned that I've seen before include "in jail" , "Put away" , "Locked up" , "behind bars" .)